src/Model/Contact.php

   1 <?php
   2 /**
   3  * @file src/Model/Contact.php
   4  */
   5 namespace Friendica\Model;
   6
   7 use Friendica\BaseObject;
   8 use Friendica\Core\Addon;
   9 use Friendica\Core\Config;
  10 use Friendica\Core\L10n;
  11 use Friendica\Core\PConfig;
  12 use Friendica\Core\Protocol;
  13 use Friendica\Core\System;
  14 use Friendica\Core\Worker;
  15 use Friendica\Database\DBA;
  16 use Friendica\Model\Profile;
  17 use Friendica\Network\Probe;
  18 use Friendica\Object\Image;
  19 use Friendica\Protocol\ActivityPub;
  20 use Friendica\Protocol\Diaspora;
  21 use Friendica\Protocol\DFRN;
  22 use Friendica\Protocol\OStatus;
  23 use Friendica\Protocol\PortableContact;
  24 use Friendica\Protocol\Salmon;
  25 use Friendica\Util\DateTimeFormat;
  26 use Friendica\Util\Network;
  27
  28 require_once 'boot.php';
  29 require_once 'include/dba.php';
  30 require_once 'include/text.php';
  31
  32 /**
  33  * @brief functions for interacting with a contact
  34  */
  35 class Contact extends BaseObject
  36 {
  37         /**
  38          * @name page/profile types
  39          *
  40          * PAGE_NORMAL is a typical personal profile account
  41          * PAGE_SOAPBOX automatically approves all friend requests as Contact::SHARING, (readonly)
  42          * PAGE_COMMUNITY automatically approves all friend requests as Contact::SHARING, but with
  43          *      write access to wall and comments (no email and not included in page owner's ACL lists)
  44          * PAGE_FREELOVE automatically approves all friend requests as full friends (Contact::FRIEND).
  45          *
  46          * @{
  47          */
  48         const PAGE_NORMAL    = 0;
  49         const PAGE_SOAPBOX   = 1;
  50         const PAGE_COMMUNITY = 2;
  51         const PAGE_FREELOVE  = 3;
  52         const PAGE_BLOG      = 4;
  53         const PAGE_PRVGROUP  = 5;
  54         /**
  55          * @}
  56          */
  57
  58         /**
  59          * @name account types
  60          *
  61          * ACCOUNT_TYPE_PERSON - the account belongs to a person
  62          *      Associated page types: PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE
  63          *
  64          * ACCOUNT_TYPE_ORGANISATION - the account belongs to an organisation
  65          *      Associated page type: PAGE_SOAPBOX
  66          *
  67          * ACCOUNT_TYPE_NEWS - the account is a news reflector
  68          *      Associated page type: PAGE_SOAPBOX
  69          *
  70          * ACCOUNT_TYPE_COMMUNITY - the account is community forum
  71          *      Associated page types: PAGE_COMMUNITY, PAGE_PRVGROUP
  72          *
  73          * ACCOUNT_TYPE_RELAY - the account is a relay
  74          *      This will only be assigned to contacts, not to user accounts
  75          * @{
  76          */
  77         const ACCOUNT_TYPE_PERSON =       0;
  78         const ACCOUNT_TYPE_ORGANISATION = 1;
  79         const ACCOUNT_TYPE_NEWS =         2;
  80         const ACCOUNT_TYPE_COMMUNITY =    3;
  81         const ACCOUNT_TYPE_RELAY =        4;
  82         /**
  83          * @}
  84          */
  85
  86         /**
  87          * @name Contact_is
  88          *
  89          * Relationship types
  90          * @{
  91          */
  92         const FOLLOWER = 1;
  93         const SHARING  = 2;
  94         const FRIEND   = 3;
  95         /**
  96          * @}
  97          */
  98
  99         /**
 100          * @brief Returns the contact id for the user and the public contact id for a given contact id
 101          *
 102          * @param int $cid Either public contact id or user's contact id
 103          * @param int $uid User ID
 104          *
 105          * @return array with public and user's contact id
 106          */
 107         private static function getPublicAndUserContacID($cid, $uid)
 108         {
 109                 if (empty($uid) || empty($cid)) {
 110                         return [];
 111                 }
 112
 113                 $contact = DBA::selectFirst('contact', ['id', 'uid', 'url'], ['id' => $cid]);
 114                 if (!DBA::isResult($contact)) {
 115                         return [];
 116                 }
 117
 118                 // We quit when the user id don't match the user id of the provided contact
 119                 if (($contact['uid'] != $uid) && ($contact['uid'] != 0)) {
 120                         return [];
 121                 }
 122
 123                 if ($contact['uid'] != 0) {
 124                         $pcid = Contact::getIdForURL($contact['url'], 0, true, ['url' => $contact['url']]);
 125                         if (empty($pcid)) {
 126                                 return [];
 127                         }
 128                         $ucid = $contact['id'];
 129                 } else {
 130                         $pcid = $contact['id'];
 131                         $ucid = Contact::getIdForURL($contact['url'], $uid, true);
 132                 }
 133
 134                 return ['public' => $pcid, 'user' => $ucid];
 135         }
 136
 137         /**
 138          * @brief Block contact id for user id
 139          *
 140          * @param int     $cid     Either public contact id or user's contact id
 141          * @param int     $uid     User ID
 142          * @param boolean $blocked Is the contact blocked or unblocked?
 143          */
 144         public static function setBlockedForUser($cid, $uid, $blocked)
 145         {
 146                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 147                 if (empty($cdata)) {
 148                         return;
 149                 }
 150
 151                 if ($cdata['user'] != 0) {
 152                         DBA::update('contact', ['blocked' => $blocked], ['id' => $cdata['user'], 'pending' => false]);
 153                 }
 154
 155                 DBA::update('user-contact', ['blocked' => $blocked], ['cid' => $cdata['public'], 'uid' => $uid], true);
 156         }
 157
 158         /**
 159          * @brief Returns "block" state for contact id and user id
 160          *
 161          * @param int $cid Either public contact id or user's contact id
 162          * @param int $uid User ID
 163          *
 164          * @return boolean is the contact id blocked for the given user?
 165          */
 166         public static function isBlockedByUser($cid, $uid)
 167         {
 168                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 169                 if (empty($cdata)) {
 170                         return;
 171                 }
 172
 173                 $public_blocked = false;
 174
 175                 if (!empty($cdata['public'])) {
 176                         $public_contact = DBA::selectFirst('user-contact', ['blocked'], ['cid' => $cdata['public'], 'uid' => $uid]);
 177                         if (DBA::isResult($public_contact)) {
 178                                 $public_blocked = $public_contact['blocked'];
 179                         }
 180                 }
 181
 182                 $user_blocked = $public_blocked;
 183
 184                 if (!empty($cdata['user'])) {
 185                         $user_contact = DBA::selectFirst('contact', ['blocked'], ['id' => $cdata['user'], 'pending' => false]);
 186                         if (DBA::isResult($user_contact)) {
 187                                 $user_blocked = $user_contact['blocked'];
 188                         }
 189                 }
 190
 191                 if ($user_blocked != $public_blocked) {
 192                         DBA::update('user-contact', ['blocked' => $user_blocked], ['cid' => $cdata['public'], 'uid' => $uid], true);
 193                 }
 194
 195                 return $user_blocked;
 196         }
 197
 198         /**
 199          * @brief Ignore contact id for user id
 200          *
 201          * @param int     $cid     Either public contact id or user's contact id
 202          * @param int     $uid     User ID
 203          * @param boolean $ignored Is the contact ignored or unignored?
 204          */
 205         public static function setIgnoredForUser($cid, $uid, $ignored)
 206         {
 207                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 208                 if (empty($cdata)) {
 209                         return;
 210                 }
 211
 212                 if ($cdata['user'] != 0) {
 213                         DBA::update('contact', ['readonly' => $ignored], ['id' => $cdata['user'], 'pending' => false]);
 214                 }
 215
 216                 DBA::update('user-contact', ['ignored' => $ignored], ['cid' => $cdata['public'], 'uid' => $uid], true);
 217         }
 218
 219         /**
 220          * @brief Returns "ignore" state for contact id and user id
 221          *
 222          * @param int $cid Either public contact id or user's contact id
 223          * @param int $uid User ID
 224          *
 225          * @return boolean is the contact id ignored for the given user?
 226          */
 227         public static function isIgnoredByUser($cid, $uid)
 228         {
 229                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 230                 if (empty($cdata)) {
 231                         return;
 232                 }
 233
 234                 $public_ignored = false;
 235
 236                 if (!empty($cdata['public'])) {
 237                         $public_contact = DBA::selectFirst('user-contact', ['ignored'], ['cid' => $cdata['public'], 'uid' => $uid]);
 238                         if (DBA::isResult($public_contact)) {
 239                                 $public_ignored = $public_contact['ignored'];
 240                         }
 241                 }
 242
 243                 $user_ignored = $public_ignored;
 244
 245                 if (!empty($cdata['user'])) {
 246                         $user_contact = DBA::selectFirst('contact', ['readonly'], ['id' => $cdata['user'], 'pending' => false]);
 247                         if (DBA::isResult($user_contact)) {
 248                                 $user_ignored = $user_contact['readonly'];
 249                         }
 250                 }
 251
 252                 if ($user_ignored != $public_ignored) {
 253                         DBA::update('user-contact', ['ignored' => $user_ignored], ['cid' => $cdata['public'], 'uid' => $uid], true);
 254                 }
 255
 256                 return $user_ignored;
 257         }
 258
 259         /**
 260          * @brief Set "collapsed" for contact id and user id
 261          *
 262          * @param int     $cid       Either public contact id or user's contact id
 263          * @param int     $uid       User ID
 264          * @param boolean $collapsed are the contact's posts collapsed or uncollapsed?
 265          */
 266         public static function setCollapsedForUser($cid, $uid, $collapsed)
 267         {
 268                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 269                 if (empty($cdata)) {
 270                         return;
 271                 }
 272
 273                 DBA::update('user-contact', ['collapsed' => $collapsed], ['cid' => $cdata['public'], 'uid' => $uid], true);
 274         }
 275
 276         /**
 277          * @brief Returns "collapsed" state for contact id and user id
 278          *
 279          * @param int $cid Either public contact id or user's contact id
 280          * @param int $uid User ID
 281          *
 282          * @return boolean is the contact id blocked for the given user?
 283          */
 284         public static function isCollapsedByUser($cid, $uid)
 285         {
 286                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 287                 if (empty($cdata)) {
 288                         return;
 289                 }
 290
 291                 $collapsed = false;
 292
 293                 if (!empty($cdata['public'])) {
 294                         $public_contact = DBA::selectFirst('user-contact', ['collapsed'], ['cid' => $cdata['public'], 'uid' => $uid]);
 295                         if (DBA::isResult($public_contact)) {
 296                                 $collapsed = $public_contact['collapsed'];
 297                         }
 298                 }
 299
 300                 return $collapsed;
 301         }
 302
 303         /**
 304          * @brief Returns a list of contacts belonging in a group
 305          *
 306          * @param int $gid
 307          * @return array
 308          */
 309         public static function getByGroupId($gid)
 310         {
 311                 $return = [];
 312
 313                 if (intval($gid)) {
 314                         $stmt = DBA::p('SELECT `group_member`.`contact-id`, `contact`.*
 315                                 FROM `contact`
 316                                 INNER JOIN `group_member`
 317                                         ON `contact`.`id` = `group_member`.`contact-id`
 318                                 WHERE `gid` = ?
 319                                 AND `contact`.`uid` = ?
 320                                 AND NOT `contact`.`self`
 321                                 AND NOT `contact`.`blocked`
 322                                 AND NOT `contact`.`pending`
 323                                 ORDER BY `contact`.`name` ASC',
 324                                 $gid,
 325                                 local_user()
 326                         );
 327
 328                         if (DBA::isResult($stmt)) {
 329                                 $return = DBA::toArray($stmt);
 330                         }
 331                 }
 332
 333                 return $return;
 334         }
 335
 336         /**
 337          * @brief Returns the count of OStatus contacts in a group
 338          *
 339          * @param int $gid
 340          * @return int
 341          */
 342         public static function getOStatusCountByGroupId($gid)
 343         {
 344                 $return = 0;
 345                 if (intval($gid)) {
 346                         $contacts = DBA::fetchFirst('SELECT COUNT(*) AS `count`
 347                                 FROM `contact`
 348                                 INNER JOIN `group_member`
 349                                         ON `contact`.`id` = `group_member`.`contact-id`
 350                                 WHERE `gid` = ?
 351                                 AND `contact`.`uid` = ?
 352                                 AND `contact`.`network` = ?
 353                                 AND `contact`.`notify` != ""',
 354                                 $gid,
 355                                 local_user(),
 356                                 Protocol::OSTATUS
 357                         );
 358                         $return = $contacts['count'];
 359                 }
 360
 361                 return $return;
 362         }
 363
 364         /**
 365          * Creates the self-contact for the provided user id
 366          *
 367          * @param int $uid
 368          * @return bool Operation success
 369          */
 370         public static function createSelfFromUserId($uid)
 371         {
 372                 // Only create the entry if it doesn't exist yet
 373                 if (DBA::exists('contact', ['uid' => $uid, 'self' => true])) {
 374                         return true;
 375                 }
 376
 377                 $user = DBA::selectFirst('user', ['uid', 'username', 'nickname'], ['uid' => $uid]);
 378                 if (!DBA::isResult($user)) {
 379                         return false;
 380                 }
 381
 382                 $return = DBA::insert('contact', [
 383                         'uid'         => $user['uid'],
 384                         'created'     => DateTimeFormat::utcNow(),
 385                         'self'        => 1,
 386                         'name'        => $user['username'],
 387                         'nick'        => $user['nickname'],
 388                         'photo'       => System::baseUrl() . '/photo/profile/' . $user['uid'] . '.jpg',
 389                         'thumb'       => System::baseUrl() . '/photo/avatar/'  . $user['uid'] . '.jpg',
 390                         'micro'       => System::baseUrl() . '/photo/micro/'   . $user['uid'] . '.jpg',
 391                         'blocked'     => 0,
 392                         'pending'     => 0,
 393                         'url'         => System::baseUrl() . '/profile/' . $user['nickname'],
 394                         'nurl'        => normalise_link(System::baseUrl() . '/profile/' . $user['nickname']),
 395                         'addr'        => $user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3),
 396                         'request'     => System::baseUrl() . '/dfrn_request/' . $user['nickname'],
 397                         'notify'      => System::baseUrl() . '/dfrn_notify/'  . $user['nickname'],
 398                         'poll'        => System::baseUrl() . '/dfrn_poll/'    . $user['nickname'],
 399                         'confirm'     => System::baseUrl() . '/dfrn_confirm/' . $user['nickname'],
 400                         'poco'        => System::baseUrl() . '/poco/'         . $user['nickname'],
 401                         'name-date'   => DateTimeFormat::utcNow(),
 402                         'uri-date'    => DateTimeFormat::utcNow(),
 403                         'avatar-date' => DateTimeFormat::utcNow(),
 404                         'closeness'   => 0
 405                 ]);
 406
 407                 return $return;
 408         }
 409
 410         /**
 411          * Updates the self-contact for the provided user id
 412          *
 413          * @param int $uid
 414          * @param boolean $update_avatar Force the avatar update
 415          */
 416         public static function updateSelfFromUserID($uid, $update_avatar = false)
 417         {
 418                 $fields = ['id', 'name', 'nick', 'location', 'about', 'keywords', 'gender', 'avatar',
 419                         'xmpp', 'contact-type', 'forum', 'prv', 'avatar-date', 'nurl'];
 420                 $self = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
 421                 if (!DBA::isResult($self)) {
 422                         return;
 423                 }
 424
 425                 $fields = ['nickname', 'page-flags', 'account-type'];
 426                 $user = DBA::selectFirst('user', $fields, ['uid' => $uid]);
 427                 if (!DBA::isResult($user)) {
 428                         return;
 429                 }
 430
 431                 $fields = ['name', 'photo', 'thumb', 'about', 'address', 'locality', 'region',
 432                         'country-name', 'gender', 'pub_keywords', 'xmpp'];
 433                 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]);
 434                 if (!DBA::isResult($profile)) {
 435                         return;
 436                 }
 437
 438                 $fields = ['name' => $profile['name'], 'nick' => $user['nickname'],
 439                         'avatar-date' => $self['avatar-date'], 'location' => Profile::formatLocation($profile),
 440                         'about' => $profile['about'], 'keywords' => $profile['pub_keywords'],
 441                         'gender' => $profile['gender'], 'avatar' => $profile['photo'],
 442                         'contact-type' => $user['account-type'], 'xmpp' => $profile['xmpp']];
 443
 444                 $avatar = DBA::selectFirst('photo', ['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
 445                 if (DBA::isResult($avatar)) {
 446                         if ($update_avatar) {
 447                                 $fields['avatar-date'] = DateTimeFormat::utcNow();
 448                         }
 449
 450                         // Creating the path to the avatar, beginning with the file suffix
 451                         $types = Image::supportedTypes();
 452                         if (isset($types[$avatar['type']])) {
 453                                 $file_suffix = $types[$avatar['type']];
 454                         } else {
 455                                 $file_suffix = 'jpg';
 456                         }
 457
 458                         // We are adding a timestamp value so that other systems won't use cached content
 459                         $timestamp = strtotime($fields['avatar-date']);
 460
 461                         $prefix = System::baseUrl() . '/photo/' .$avatar['resource-id'] . '-';
 462                         $suffix = '.' . $file_suffix . '?ts=' . $timestamp;
 463
 464                         $fields['photo'] = $prefix . '4' . $suffix;
 465                         $fields['thumb'] = $prefix . '5' . $suffix;
 466                         $fields['micro'] = $prefix . '6' . $suffix;
 467                 } else {
 468                         // We hadn't found a photo entry, so we use the default avatar
 469                         $fields['photo'] = System::baseUrl() . '/images/person-175.jpg';
 470                         $fields['thumb'] = System::baseUrl() . '/images/person-80.jpg';
 471                         $fields['micro'] = System::baseUrl() . '/images/person-48.jpg';
 472                 }
 473
 474                 $fields['forum'] = $user['page-flags'] == self::PAGE_COMMUNITY;
 475                 $fields['prv'] = $user['page-flags'] == self::PAGE_PRVGROUP;
 476
 477                 // it seems as if ported accounts can have wrong values, so we make sure that now everything is fine.
 478                 $fields['url'] = System::baseUrl() . '/profile/' . $user['nickname'];
 479                 $fields['nurl'] = normalise_link($fields['url']);
 480                 $fields['addr'] = $user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3);
 481                 $fields['request'] = System::baseUrl() . '/dfrn_request/' . $user['nickname'];
 482                 $fields['notify'] = System::baseUrl() . '/dfrn_notify/'  . $user['nickname'];
 483                 $fields['poll'] = System::baseUrl() . '/dfrn_poll/'    . $user['nickname'];
 484                 $fields['confirm'] = System::baseUrl() . '/dfrn_confirm/' . $user['nickname'];
 485                 $fields['poco'] = System::baseUrl() . '/poco/'         . $user['nickname'];
 486
 487                 $update = false;
 488
 489                 foreach ($fields as $field => $content) {
 490                         if (isset($self[$field]) && $self[$field] != $content) {
 491                                 $update = true;
 492                         }
 493                 }
 494
 495                 if ($update) {
 496                         $fields['name-date'] = DateTimeFormat::utcNow();
 497                         DBA::update('contact', $fields, ['id' => $self['id']]);
 498
 499                         // Update the public contact as well
 500                         DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $self['nurl']]);
 501
 502                         // Update the profile
 503                         $fields = ['photo' => System::baseUrl() . '/photo/profile/' .$uid . '.jpg',
 504                                 'thumb' => System::baseUrl() . '/photo/avatar/' . $uid .'.jpg'];
 505                         DBA::update('profile', $fields, ['uid' => $uid, 'is-default' => true]);
 506                 }
 507         }
 508
 509         /**
 510          * @brief Marks a contact for removal
 511          *
 512          * @param int $id contact id
 513          * @return null
 514          */
 515         public static function remove($id)
 516         {
 517                 // We want just to make sure that we don't delete our "self" contact
 518                 $contact = DBA::selectFirst('contact', ['uid'], ['id' => $id, 'self' => false]);
 519                 if (!DBA::isResult($contact) || !intval($contact['uid'])) {
 520                         return;
 521                 }
 522
 523                 // Archive the contact
 524                 DBA::update('contact', ['archive' => true, 'network' => Protocol::PHANTOM], ['id' => $id]);
 525
 526                 // Delete it in the background
 527                 Worker::add(PRIORITY_LOW, 'RemoveContact', $id);
 528         }
 529
 530         /**
 531          * @brief Sends an unfriend message. Does not remove the contact
 532          *
 533          * @param array   $user     User unfriending
 534          * @param array   $contact  Contact unfriended
 535          * @param boolean $dissolve Remove the contact on the remote side
 536          * @return void
 537          */
 538         public static function terminateFriendship(array $user, array $contact, $dissolve = false)
 539         {
 540                 if (($contact['network'] == Protocol::DFRN) && $dissolve) {
 541                         DFRN::deliver($user, $contact, 'placeholder', true);
 542                 } elseif (in_array($contact['network'], [Protocol::OSTATUS, Protocol::DFRN])) {
 543                         // create an unfollow slap
 544                         $item = [];
 545                         $item['verb'] = NAMESPACE_OSTATUS . "/unfollow";
 546                         $item['follow'] = $contact["url"];
 547                         $item['body'] = '';
 548                         $item['title'] = '';
 549                         $item['guid'] = '';
 550                         $item['tag'] = '';
 551                         $item['attach'] = '';
 552                         $slap = OStatus::salmon($item, $user);
 553
 554                         if (!empty($contact['notify'])) {
 555                                 Salmon::slapper($user, $contact['notify'], $slap);
 556                         }
 557                 } elseif ($contact['network'] == Protocol::DIASPORA) {
 558                         Diaspora::sendUnshare($user, $contact);
 559                 } elseif ($contact['network'] == Protocol::ACTIVITYPUB) {
 560                         ActivityPub::transmitContactActivity('Undo', $contact['url'], '', $user['uid']);
 561                 }
 562         }
 563
 564         /**
 565          * @brief Marks a contact for archival after a communication issue delay
 566          *
 567          * Contact has refused to recognise us as a friend. We will start a countdown.
 568          * If they still don't recognise us in 32 days, the relationship is over,
 569          * and we won't waste any more time trying to communicate with them.
 570          * This provides for the possibility that their database is temporarily messed
 571          * up or some other transient event and that there's a possibility we could recover from it.
 572          *
 573          * @param array $contact contact to mark for archival
 574          * @return null
 575          */
 576         public static function markForArchival(array $contact)
 577         {
 578                 if (!isset($contact['url']) && !empty($contact['id'])) {
 579                         $fields = ['id', 'url', 'archive', 'self', 'term-date'];
 580                         $contact = DBA::selectFirst('contact', [], ['id' => $contact['id']]);
 581                         if (!DBA::isResult($contact)) {
 582                                 return;
 583                         }
 584                 } elseif (!isset($contact['url'])) {
 585                         logger('Empty contact: ' . json_encode($contact) . ' - ' . System::callstack(20), LOGGER_DEBUG);
 586                 }
 587
 588                 // Contact already archived or "self" contact? => nothing to do
 589                 if ($contact['archive'] || $contact['self']) {
 590                         return;
 591                 }
 592
 593                 if ($contact['term-date'] <= NULL_DATE) {
 594                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['id' => $contact['id']]);
 595                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['`nurl` = ? AND `term-date` <= ? AND NOT `self`', normalise_link($contact['url']), NULL_DATE]);
 596                 } else {
 597                         /* @todo
 598                          * We really should send a notification to the owner after 2-3 weeks
 599                          * so they won't be surprised when the contact vanishes and can take
 600                          * remedial action if this was a serious mistake or glitch
 601                          */
 602
 603                         /// @todo Check for contact vitality via probing
 604                         $archival_days = Config::get('system', 'archival_days', 32);
 605
 606                         $expiry = $contact['term-date'] . ' + ' . $archival_days . ' days ';
 607                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($expiry)) {
 608                                 /* Relationship is really truly dead. archive them rather than
 609                                  * delete, though if the owner tries to unarchive them we'll start
 610                                  * the whole process over again.
 611                                  */
 612                                 DBA::update('contact', ['archive' => 1], ['id' => $contact['id']]);
 613                                 DBA::update('contact', ['archive' => 1], ['nurl' => normalise_link($contact['url']), 'self' => false]);
 614                         }
 615                 }
 616         }
 617
 618         /**
 619          * @brief Cancels the archival countdown
 620          *
 621          * @see Contact::markForArchival()
 622          *
 623          * @param array $contact contact to be unmarked for archival
 624          * @return null
 625          */
 626         public static function unmarkForArchival(array $contact)
 627         {
 628                 $condition = ['`id` = ? AND (`term-date` > ? OR `archive`)', $contact['id'], NULL_DATE];
 629                 $exists = DBA::exists('contact', $condition);
 630
 631                 // We don't need to update, we never marked this contact for archival
 632                 if (!$exists) {
 633                         return;
 634                 }
 635
 636                 if (!isset($contact['url']) && !empty($contact['id'])) {
 637                         $fields = ['id', 'url', 'batch'];
 638                         $contact = DBA::selectFirst('contact', [], ['id' => $contact['id']]);
 639                         if (!DBA::isResult($contact)) {
 640                                 return;
 641                         }
 642                 }
 643
 644                 // It's a miracle. Our dead contact has inexplicably come back to life.
 645                 $fields = ['term-date' => NULL_DATE, 'archive' => false];
 646                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 647                 DBA::update('contact', $fields, ['nurl' => normalise_link($contact['url'])]);
 648
 649                 if (!empty($contact['batch'])) {
 650                         $condition = ['batch' => $contact['batch'], 'contact-type' => self::ACCOUNT_TYPE_RELAY];
 651                         DBA::update('contact', $fields, $condition);
 652                 }
 653         }
 654
 655         /**
 656          * @brief Get contact data for a given profile link
 657          *
 658          * The function looks at several places (contact table and gcontact table) for the contact
 659          * It caches its result for the same script execution to prevent duplicate calls
 660          *
 661          * @param string $url     The profile link
 662          * @param int    $uid     User id
 663          * @param array  $default If not data was found take this data as default value
 664          *
 665          * @return array Contact data
 666          */
 667         public static function getDetailsByURL($url, $uid = -1, array $default = [])
 668         {
 669                 static $cache = [];
 670
 671                 if ($url == '') {
 672                         return $default;
 673                 }
 674
 675                 if ($uid == -1) {
 676                         $uid = local_user();
 677                 }
 678
 679                 if (isset($cache[$url][$uid])) {
 680                         return $cache[$url][$uid];
 681                 }
 682
 683                 $ssl_url = str_replace('http://', 'https://', $url);
 684
 685                 // Fetch contact data from the contact table for the given user
 686                 $s = DBA::p("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 687                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`
 688                 FROM `contact` WHERE `nurl` = ? AND `uid` = ?", normalise_link($url), $uid);
 689                 $r = DBA::toArray($s);
 690
 691                 // Fetch contact data from the contact table for the given user, checking with the alias
 692                 if (!DBA::isResult($r)) {
 693                         $s = DBA::p("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 694                                 `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`
 695                         FROM `contact` WHERE `alias` IN (?, ?, ?) AND `uid` = ?", normalise_link($url), $url, $ssl_url, $uid);
 696                         $r = DBA::toArray($s);
 697                 }
 698
 699                 // Fetch the data from the contact table with "uid=0" (which is filled automatically)
 700                 if (!DBA::isResult($r)) {
 701                         $s = DBA::p("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 702                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`
 703                         FROM `contact` WHERE `nurl` = ? AND `uid` = 0", normalise_link($url));
 704                         $r = DBA::toArray($s);
 705                 }
 706
 707                 // Fetch the data from the contact table with "uid=0" (which is filled automatically) - checked with the alias
 708                 if (!DBA::isResult($r)) {
 709                         $s = DBA::p("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 710                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`
 711                         FROM `contact` WHERE `alias` IN (?, ?, ?) AND `uid` = 0", normalise_link($url), $url, $ssl_url);
 712                         $r = DBA::toArray($s);
 713                 }
 714
 715                 // Fetch the data from the gcontact table
 716                 if (!DBA::isResult($r)) {
 717                         $s = DBA::p("SELECT 0 AS `id`, 0 AS `cid`, `id` AS `gid`, 0 AS `zid`, 0 AS `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, '' AS `xmpp`,
 718                         `keywords`, `gender`, `photo`, `photo` AS `thumb`, `photo` AS `micro`, 0 AS `forum`, 0 AS `prv`, `community`, `contact-type`, `birthday`, 0 AS `self`
 719                         FROM `gcontact` WHERE `nurl` = ?", normalise_link($url));
 720                         $r = DBA::toArray($s);
 721                 }
 722
 723                 if (DBA::isResult($r)) {
 724                         // If there is more than one entry we filter out the connector networks
 725                         if (count($r) > 1) {
 726                                 foreach ($r as $id => $result) {
 727                                         if ($result["network"] == Protocol::STATUSNET) {
 728                                                 unset($r[$id]);
 729                                         }
 730                                 }
 731                         }
 732
 733                         $profile = array_shift($r);
 734
 735                         // "bd" always contains the upcoming birthday of a contact.
 736                         // "birthday" might contain the birthday including the year of birth.
 737                         if ($profile["birthday"] > '0001-01-01') {
 738                                 $bd_timestamp = strtotime($profile["birthday"]);
 739                                 $month = date("m", $bd_timestamp);
 740                                 $day = date("d", $bd_timestamp);
 741
 742                                 $current_timestamp = time();
 743                                 $current_year = date("Y", $current_timestamp);
 744                                 $current_month = date("m", $current_timestamp);
 745                                 $current_day = date("d", $current_timestamp);
 746
 747                                 $profile["bd"] = $current_year . "-" . $month . "-" . $day;
 748                                 $current = $current_year . "-" . $current_month . "-" . $current_day;
 749
 750                                 if ($profile["bd"] < $current) {
 751                                         $profile["bd"] = ( ++$current_year) . "-" . $month . "-" . $day;
 752                                 }
 753                         } else {
 754                                 $profile["bd"] = '0001-01-01';
 755                         }
 756                 } else {
 757                         $profile = $default;
 758                 }
 759
 760                 if (empty($profile["photo"]) && isset($default["photo"])) {
 761                         $profile["photo"] = $default["photo"];
 762                 }
 763
 764                 if (empty($profile["name"]) && isset($default["name"])) {
 765                         $profile["name"] = $default["name"];
 766                 }
 767
 768                 if (empty($profile["network"]) && isset($default["network"])) {
 769                         $profile["network"] = $default["network"];
 770                 }
 771
 772                 if (empty($profile["thumb"]) && isset($profile["photo"])) {
 773                         $profile["thumb"] = $profile["photo"];
 774                 }
 775
 776                 if (empty($profile["micro"]) && isset($profile["thumb"])) {
 777                         $profile["micro"] = $profile["thumb"];
 778                 }
 779
 780                 if ((empty($profile["addr"]) || empty($profile["name"])) && (defaults($profile, "gid", 0) != 0)
 781                         && in_array($profile["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])
 782                 ) {
 783                         Worker::add(PRIORITY_LOW, "UpdateGContact", $profile["gid"]);
 784                 }
 785
 786                 // Show contact details of Diaspora contacts only if connected
 787                 if ((defaults($profile, "cid", 0) == 0) && (defaults($profile, "network", "") == Protocol::DIASPORA)) {
 788                         $profile["location"] = "";
 789                         $profile["about"] = "";
 790                         $profile["gender"] = "";
 791                         $profile["birthday"] = '0001-01-01';
 792                 }
 793
 794                 $cache[$url][$uid] = $profile;
 795
 796                 return $profile;
 797         }
 798
 799         /**
 800          * @brief Get contact data for a given address
 801          *
 802          * The function looks at several places (contact table and gcontact table) for the contact
 803          *
 804          * @param string $addr The profile link
 805          * @param int    $uid  User id
 806          *
 807          * @return array Contact data
 808          */
 809         public static function getDetailsByAddr($addr, $uid = -1)
 810         {
 811                 static $cache = [];
 812
 813                 if ($addr == '') {
 814                         return [];
 815                 }
 816
 817                 if ($uid == -1) {
 818                         $uid = local_user();
 819                 }
 820
 821                 // Fetch contact data from the contact table for the given user
 822                 $r = q("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 823                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`
 824                         FROM `contact` WHERE `addr` = '%s' AND `uid` = %d",
 825                         DBA::escape($addr),
 826                         intval($uid)
 827                 );
 828                 // Fetch the data from the contact table with "uid=0" (which is filled automatically)
 829                 if (!DBA::isResult($r)) {
 830                         $r = q("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 831                                 `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`
 832                                 FROM `contact` WHERE `addr` = '%s' AND `uid` = 0",
 833                                 DBA::escape($addr)
 834                         );
 835                 }
 836
 837                 // Fetch the data from the gcontact table
 838                 if (!DBA::isResult($r)) {
 839                         $r = q("SELECT 0 AS `id`, 0 AS `cid`, `id` AS `gid`, 0 AS `zid`, 0 AS `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, '' AS `xmpp`,
 840                                 `keywords`, `gender`, `photo`, `photo` AS `thumb`, `photo` AS `micro`, `community` AS `forum`, 0 AS `prv`, `community`, `contact-type`, `birthday`, 0 AS `self`
 841                                 FROM `gcontact` WHERE `addr` = '%s'",
 842                                 DBA::escape($addr)
 843                         );
 844                 }
 845
 846                 if (!DBA::isResult($r)) {
 847                         $data = Probe::uri($addr);
 848
 849                         $profile = self::getDetailsByURL($data['url'], $uid);
 850                 } else {
 851                         $profile = $r[0];
 852                 }
 853
 854                 return $profile;
 855         }
 856
 857         /**
 858          * @brief Returns the data array for the photo menu of a given contact
 859          *
 860          * @param array $contact contact
 861          * @param int   $uid     optional, default 0
 862          * @return array
 863          */
 864         public static function photoMenu(array $contact, $uid = 0)
 865         {
 866                 // @todo Unused, to be removed
 867                 $a = get_app();
 868
 869                 $contact_url = '';
 870                 $pm_url = '';
 871                 $status_link = '';
 872                 $photos_link = '';
 873                 $posts_link = '';
 874                 $contact_drop_link = '';
 875                 $poke_link = '';
 876
 877                 if ($uid == 0) {
 878                         $uid = local_user();
 879                 }
 880
 881                 if (empty($contact['uid']) || ($contact['uid'] != $uid)) {
 882                         if ($uid == 0) {
 883                                 $profile_link = self::magicLink($contact['url']);
 884                                 $menu = ['profile' => [L10n::t('View Profile'), $profile_link, true]];
 885
 886                                 return $menu;
 887                         }
 888
 889                         // Look for our own contact if the uid doesn't match and isn't public
 890                         $contact_own = DBA::selectFirst('contact', [], ['nurl' => $contact['nurl'], 'network' => $contact['network'], 'uid' => $uid]);
 891                         if (DBA::isResult($contact_own)) {
 892                                 return self::photoMenu($contact_own, $uid);
 893                         }
 894                 }
 895
 896                 $sparkle = false;
 897                 if (($contact['network'] === Protocol::DFRN) && !$contact['self']) {
 898                         $sparkle = true;
 899                         $profile_link = System::baseUrl() . '/redir/' . $contact['id'];
 900                 } else {
 901                         $profile_link = $contact['url'];
 902                 }
 903
 904                 if ($profile_link === 'mailbox') {
 905                         $profile_link = '';
 906                 }
 907
 908                 if ($sparkle) {
 909                         $status_link = $profile_link . '?url=status';
 910                         $photos_link = $profile_link . '?url=photos';
 911                         $profile_link = $profile_link . '?url=profile';
 912                 }
 913
 914                 if (in_array($contact['network'], [Protocol::DFRN, Protocol::DIASPORA]) && !$contact['self']) {
 915                         $pm_url = System::baseUrl() . '/message/new/' . $contact['id'];
 916                 }
 917
 918                 if (($contact['network'] == Protocol::DFRN) && !$contact['self']) {
 919                         $poke_link = System::baseUrl() . '/poke/?f=&c=' . $contact['id'];
 920                 }
 921
 922                 $contact_url = System::baseUrl() . '/contacts/' . $contact['id'];
 923
 924                 $posts_link = System::baseUrl() . '/contacts/' . $contact['id'] . '/conversations';
 925
 926                 if (!$contact['self']) {
 927                         $contact_drop_link = System::baseUrl() . '/contacts/' . $contact['id'] . '/drop?confirm=1';
 928                 }
 929
 930                 /**
 931                  * Menu array:
 932                  * "name" => [ "Label", "link", (bool)Should the link opened in a new tab? ]
 933                  */
 934                 if (empty($contact['uid'])) {
 935                         $connlnk = 'follow/?url=' . $contact['url'];
 936                         $menu = [
 937                                 'profile' => [L10n::t('View Profile'),   $profile_link, true],
 938                                 'network' => [L10n::t('Network Posts'),  $posts_link,   false],
 939                                 'edit'    => [L10n::t('View Contact'),   $contact_url,  false],
 940                                 'follow'  => [L10n::t('Connect/Follow'), $connlnk,      true],
 941                         ];
 942                 } else {
 943                         $menu = [
 944                                 'status'  => [L10n::t('View Status'),   $status_link,       true],
 945                                 'profile' => [L10n::t('View Profile'),  $profile_link,      true],
 946                                 'photos'  => [L10n::t('View Photos'),   $photos_link,       true],
 947                                 'network' => [L10n::t('Network Posts'), $posts_link,        false],
 948                                 'edit'    => [L10n::t('View Contact'),  $contact_url,       false],
 949                                 'drop'    => [L10n::t('Drop Contact'),  $contact_drop_link, false],
 950                                 'pm'      => [L10n::t('Send PM'),       $pm_url,            false],
 951                                 'poke'    => [L10n::t('Poke'),          $poke_link,         false],
 952                         ];
 953                 }
 954
 955                 $args = ['contact' => $contact, 'menu' => &$menu];
 956
 957                 Addon::callHooks('contact_photo_menu', $args);
 958
 959                 $menucondensed = [];
 960
 961                 foreach ($menu as $menuname => $menuitem) {
 962                         if ($menuitem[1] != '') {
 963                                 $menucondensed[$menuname] = $menuitem;
 964                         }
 965                 }
 966
 967                 return $menucondensed;
 968         }
 969
 970         /**
 971          * @brief Returns ungrouped contact count or list for user
 972          *
 973          * Returns either the total number of ungrouped contacts for the given user
 974          * id or a paginated list of ungrouped contacts.
 975          *
 976          * @param int $uid   uid
 977          * @param int $start optional, default 0
 978          * @param int $count optional, default 0
 979          *
 980          * @return array
 981          */
 982         public static function getUngroupedList($uid)
 983         {
 984                 return q("SELECT *
 985                            FROM `contact`
 986                            WHERE `uid` = %d
 987                            AND NOT `self`
 988                            AND NOT `blocked`
 989                            AND NOT `pending`
 990                            AND `id` NOT IN (
 991                                 SELECT DISTINCT(`contact-id`)
 992                                 FROM `group_member`
 993                                 INNER JOIN `group` ON `group`.`id` = `group_member`.`gid`
 994                                 WHERE `group`.`uid` = %d
 995                            )", intval($uid), intval($uid));
 996         }
 997
 998         /**
 999          * @brief Fetch the contact id for a given URL and user
1000          *
1001          * First lookup in the contact table to find a record matching either `url`, `nurl`,
1002          * `addr` or `alias`.
1003          *
1004          * If there's no record and we aren't looking for a public contact, we quit.
1005          * If there's one, we check that it isn't time to update the picture else we
1006          * directly return the found contact id.
1007          *
1008          * Second, we probe the provided $url whether it's http://server.tld/profile or
1009          * nick@server.tld. We quit if we can't get any info back.
1010          *
1011          * Third, we create the contact record if it doesn't exist
1012          *
1013          * Fourth, we update the existing record with the new data (avatar, alias, nick)
1014          * if there's any updates
1015          *
1016          * @param string  $url       Contact URL
1017          * @param integer $uid       The user id for the contact (0 = public contact)
1018          * @param boolean $no_update Don't update the contact
1019          * @param array   $default   Default value for creating the contact when every else fails
1020          *
1021          * @return integer Contact ID
1022          */
1023         public static function getIdForURL($url, $uid = 0, $no_update = false, $default = [])
1024         {
1025                 logger("Get contact data for url " . $url . " and user " . $uid . " - " . System::callstack(), LOGGER_DEBUG);
1026
1027                 $contact_id = 0;
1028
1029                 if ($url == '') {
1030                         return 0;
1031                 }
1032
1033                 /// @todo Verify if we can't use Contact::getDetailsByUrl instead of the following
1034                 // We first try the nurl (http://server.tld/nick), most common case
1035                 $contact = DBA::selectFirst('contact', ['id', 'avatar', 'avatar-date'], ['nurl' => normalise_link($url), 'uid' => $uid]);
1036
1037                 // Then the addr (nick@server.tld)
1038                 if (!DBA::isResult($contact)) {
1039                         $contact = DBA::selectFirst('contact', ['id', 'avatar', 'avatar-date'], ['addr' => $url, 'uid' => $uid]);
1040                 }
1041
1042                 // Then the alias (which could be anything)
1043                 if (!DBA::isResult($contact)) {
1044                         // The link could be provided as http although we stored it as https
1045                         $ssl_url = str_replace('http://', 'https://', $url);
1046                         $condition = ['`alias` IN (?, ?, ?) AND `uid` = ?', $url, normalise_link($url), $ssl_url, $uid];
1047                         $contact = DBA::selectFirst('contact', ['id', 'avatar', 'avatar-date'], $condition);
1048                 }
1049
1050                 if (DBA::isResult($contact)) {
1051                         $contact_id = $contact["id"];
1052
1053                         // Update the contact every 7 days
1054                         $update_contact = ($contact['avatar-date'] < DateTimeFormat::utc('now -7 days'));
1055
1056                         // We force the update if the avatar is empty
1057                         if (!x($contact, 'avatar')) {
1058                                 $update_contact = true;
1059                         }
1060                         if (!$update_contact || $no_update) {
1061                                 return $contact_id;
1062                         }
1063                 } elseif ($uid != 0) {
1064                         // Non-existing user-specific contact, exiting
1065                         return 0;
1066                 }
1067
1068                 // When we don't want to update, we look if some of our users already know this contact
1069                 if ($no_update) {
1070                         $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1071                                 'photo', 'keywords', 'location', 'about', 'network',
1072                                 'priority', 'batch', 'request', 'confirm', 'poco'];
1073                         $data = DBA::selectFirst('contact', $fields, ['nurl' => normalise_link($url)]);
1074
1075                         if (DBA::isResult($data)) {
1076                                 // For security reasons we don't fetch key data from our users
1077                                 $data["pubkey"] = '';
1078                         }
1079                 } else {
1080                         $data = [];
1081                 }
1082
1083                 if (empty($data)) {
1084                         $data = Probe::uri($url, "", $uid);
1085
1086                         // Ensure that there is a gserver entry
1087                         if (!empty($data['baseurl']) && ($data['network'] != Protocol::PHANTOM)) {
1088                                 PortableContact::checkServer($data['baseurl']);
1089                         }
1090                 }
1091
1092                 // Last try in gcontact for unsupported networks
1093                 if (!in_array($data["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::PUMPIO, Protocol::MAIL, Protocol::FEED])) {
1094                         if ($uid != 0) {
1095                                 return 0;
1096                         }
1097
1098                         // Get data from the gcontact table
1099                         $fields = ['name', 'nick', 'url', 'photo', 'addr', 'alias', 'network'];
1100                         $contact = DBA::selectFirst('gcontact', $fields, ['nurl' => normalise_link($url)]);
1101                         if (!DBA::isResult($contact)) {
1102                                 $contact = DBA::selectFirst('contact', $fields, ['nurl' => normalise_link($url)]);
1103                         }
1104
1105                         if (!DBA::isResult($contact)) {
1106                                 $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1107                                         'photo', 'keywords', 'location', 'about', 'network',
1108                                         'priority', 'batch', 'request', 'confirm', 'poco'];
1109                                 $contact = DBA::selectFirst('contact', $fields, ['addr' => $url]);
1110                         }
1111
1112                         if (!DBA::isResult($contact)) {
1113                                 // The link could be provided as http although we stored it as https
1114                                 $ssl_url = str_replace('http://', 'https://', $url);
1115                                 $condition = ['alias' => [$url, normalise_link($url), $ssl_url]];
1116                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1117                         }
1118
1119                         if (!DBA::isResult($contact)) {
1120                                 $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1121                                         'photo', 'network', 'priority', 'batch', 'request', 'confirm'];
1122                                 $condition = ['url' => [$url, normalise_link($url), $ssl_url]];
1123                                 $contact = DBA::selectFirst('fcontact', $fields, $condition);
1124                         }
1125
1126                         if (!empty($default)) {
1127                                 $contact = $default;
1128                         }
1129
1130                         if (!DBA::isResult($contact)) {
1131                                 return 0;
1132                         } else {
1133                                 $data = array_merge($data, $contact);
1134                         }
1135                 }
1136
1137                 if (!$contact_id && ($data["alias"] != '') && ($data["alias"] != $url)) {
1138                         $contact_id = self::getIdForURL($data["alias"], $uid, true);
1139                 }
1140
1141                 $url = $data["url"];
1142                 if (!$contact_id) {
1143                         DBA::insert('contact', [
1144                                 'uid'       => $uid,
1145                                 'created'   => DateTimeFormat::utcNow(),
1146                                 'url'       => $data["url"],
1147                                 'nurl'      => normalise_link($data["url"]),
1148                                 'addr'      => $data["addr"],
1149                                 'alias'     => $data["alias"],
1150                                 'notify'    => $data["notify"],
1151                                 'poll'      => $data["poll"],
1152                                 'name'      => $data["name"],
1153                                 'nick'      => $data["nick"],
1154                                 'photo'     => $data["photo"],
1155                                 'keywords'  => $data["keywords"],
1156                                 'location'  => $data["location"],
1157                                 'about'     => $data["about"],
1158                                 'network'   => $data["network"],
1159                                 'pubkey'    => $data["pubkey"],
1160                                 'rel'       => self::SHARING,
1161                                 'priority'  => $data["priority"],
1162                                 'batch'     => $data["batch"],
1163                                 'request'   => $data["request"],
1164                                 'confirm'   => $data["confirm"],
1165                                 'poco'      => $data["poco"],
1166                                 'name-date' => DateTimeFormat::utcNow(),
1167                                 'uri-date'  => DateTimeFormat::utcNow(),
1168                                 'avatar-date' => DateTimeFormat::utcNow(),
1169                                 'writable'  => 1,
1170                                 'blocked'   => 0,
1171                                 'readonly'  => 0,
1172                                 'pending'   => 0]
1173                         );
1174
1175                         $s = DBA::select('contact', ['id'], ['nurl' => normalise_link($data["url"]), 'uid' => $uid], ['order' => ['id'], 'limit' => 2]);
1176                         $contacts = DBA::toArray($s);
1177                         if (!DBA::isResult($contacts)) {
1178                                 return 0;
1179                         }
1180
1181                         $contact_id = $contacts[0]["id"];
1182
1183                         // Update the newly created contact from data in the gcontact table
1184                         $gcontact = DBA::selectFirst('gcontact', ['location', 'about', 'keywords', 'gender'], ['nurl' => normalise_link($data["url"])]);
1185                         if (DBA::isResult($gcontact)) {
1186                                 // Only use the information when the probing hadn't fetched these values
1187                                 if ($data['keywords'] != '') {
1188                                         unset($gcontact['keywords']);
1189                                 }
1190                                 if ($data['location'] != '') {
1191                                         unset($gcontact['location']);
1192                                 }
1193                                 if ($data['about'] != '') {
1194                                         unset($gcontact['about']);
1195                                 }
1196                                 DBA::update('contact', $gcontact, ['id' => $contact_id]);
1197                         }
1198
1199                         if (count($contacts) > 1 && $uid == 0 && $contact_id != 0 && $data["url"] != "") {
1200                                 DBA::delete('contact', ["`nurl` = ? AND `uid` = 0 AND `id` != ? AND NOT `self`",
1201                                         normalise_link($data["url"]), $contact_id]);
1202                         }
1203                 }
1204
1205                 self::updateAvatar($data["photo"], $uid, $contact_id);
1206
1207                 $fields = ['url', 'nurl', 'addr', 'alias', 'name', 'nick', 'keywords', 'location', 'about', 'avatar-date', 'pubkey'];
1208                 $contact = DBA::selectFirst('contact', $fields, ['id' => $contact_id]);
1209
1210                 // This condition should always be true
1211                 if (!DBA::isResult($contact)) {
1212                         return $contact_id;
1213                 }
1214
1215                 $updated = ['addr' => $data['addr'],
1216                         'alias' => $data['alias'],
1217                         'url' => $data['url'],
1218                         'nurl' => normalise_link($data['url']),
1219                         'name' => $data['name'],
1220                         'nick' => $data['nick']];
1221
1222                 if ($data['keywords'] != '') {
1223                         $updated['keywords'] = $data['keywords'];
1224                 }
1225                 if ($data['location'] != '') {
1226                         $updated['location'] = $data['location'];
1227                 }
1228
1229                 // Update the technical stuff as well - if filled
1230                 if ($data['notify'] != '') {
1231                         $updated['notify'] = $data['notify'];
1232                 }
1233                 if ($data['poll'] != '') {
1234                         $updated['poll'] = $data['poll'];
1235                 }
1236                 if ($data['batch'] != '') {
1237                         $updated['batch'] = $data['batch'];
1238                 }
1239                 if ($data['request'] != '') {
1240                         $updated['request'] = $data['request'];
1241                 }
1242                 if ($data['confirm'] != '') {
1243                         $updated['confirm'] = $data['confirm'];
1244                 }
1245                 if ($data['poco'] != '') {
1246                         $updated['poco'] = $data['poco'];
1247                 }
1248
1249                 // Only fill the pubkey if it had been empty before. We have to prevent identity theft.
1250                 if (empty($contact['pubkey'])) {
1251                         $updated['pubkey'] = $data['pubkey'];
1252                 }
1253
1254                 if (($data["addr"] != $contact["addr"]) || ($data["alias"] != $contact["alias"])) {
1255                         $updated['uri-date'] = DateTimeFormat::utcNow();
1256                 }
1257                 if (($data["name"] != $contact["name"]) || ($data["nick"] != $contact["nick"])) {
1258                         $updated['name-date'] = DateTimeFormat::utcNow();
1259                 }
1260
1261                 $updated['avatar-date'] = DateTimeFormat::utcNow();
1262
1263                 DBA::update('contact', $updated, ['id' => $contact_id], $contact);
1264
1265                 return $contact_id;
1266         }
1267
1268         /**
1269          * @brief Checks if the contact is blocked
1270          *
1271          * @param int $cid contact id
1272          *
1273          * @return boolean Is the contact blocked?
1274          */
1275         public static function isBlocked($cid)
1276         {
1277                 if ($cid == 0) {
1278                         return false;
1279                 }
1280
1281                 $blocked = DBA::selectFirst('contact', ['blocked'], ['id' => $cid]);
1282                 if (!DBA::isResult($blocked)) {
1283                         return false;
1284                 }
1285                 return (bool) $blocked['blocked'];
1286         }
1287
1288         /**
1289          * @brief Checks if the contact is hidden
1290          *
1291          * @param int $cid contact id
1292          *
1293          * @return boolean Is the contact hidden?
1294          */
1295         public static function isHidden($cid)
1296         {
1297                 if ($cid == 0) {
1298                         return false;
1299                 }
1300
1301                 $hidden = DBA::selectFirst('contact', ['hidden'], ['id' => $cid]);
1302                 if (!DBA::isResult($hidden)) {
1303                         return false;
1304                 }
1305                 return (bool) $hidden['hidden'];
1306         }
1307
1308         /**
1309          * @brief Returns posts from a given contact url
1310          *
1311          * @param string $contact_url Contact URL
1312          *
1313          * @return string posts in HTML
1314          */
1315         public static function getPostsFromUrl($contact_url, $thread_mode = false, $update = 0)
1316         {
1317                 $a = self::getApp();
1318
1319                 require_once 'include/conversation.php';
1320
1321                 // There are no posts with "uid = 0" with connector networks
1322                 // This speeds up the query a lot
1323                 $r = q("SELECT `network`, `id` AS `author-id`, `contact-type` FROM `contact`
1324                         WHERE `contact`.`nurl` = '%s' AND `contact`.`uid` = 0",
1325                         DBA::escape(normalise_link($contact_url))
1326                 );
1327
1328                 if (!DBA::isResult($r)) {
1329                         return '';
1330                 }
1331
1332                 if (in_array($r[0]["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
1333                         $sql = "(`item`.`uid` = 0 OR (`item`.`uid` = ? AND NOT `item`.`global`))";
1334                 } else {
1335                         $sql = "`item`.`uid` = ?";
1336                 }
1337
1338                 $author_id = intval($r[0]["author-id"]);
1339
1340                 $contact = ($r[0]["contact-type"] == self::ACCOUNT_TYPE_COMMUNITY ? 'owner-id' : 'author-id');
1341
1342                 if ($thread_mode) {
1343                         $condition = ["`$contact` = ? AND `gravity` = ? AND " . $sql,
1344                                 $author_id, GRAVITY_PARENT, local_user()];
1345                 } else {
1346                         $condition = ["`$contact` = ? AND `gravity` IN (?, ?) AND " . $sql,
1347                                 $author_id, GRAVITY_PARENT, GRAVITY_COMMENT, local_user()];
1348                 }
1349
1350                 $params = ['order' => ['created' => true],
1351                         'limit' => [$a->pager['start'], $a->pager['itemspage']]];
1352
1353                 if ($thread_mode) {
1354                         $r = Item::selectThreadForUser(local_user(), ['uri'], $condition, $params);
1355
1356                         $items = Item::inArray($r);
1357
1358                         $o = conversation($a, $items, 'contacts', $update);
1359                 } else {
1360                         $r = Item::selectForUser(local_user(), [], $condition, $params);
1361
1362                         $items = Item::inArray($r);
1363
1364                         $o = conversation($a, $items, 'contact-posts', false);
1365                 }
1366
1367                 if (!$update) {
1368                         $o .= alt_pager($a, count($items));
1369                 }
1370
1371                 return $o;
1372         }
1373
1374         /**
1375          * @brief Returns the account type name
1376          *
1377          * The function can be called with either the user or the contact array
1378          *
1379          * @param array $contact contact or user array
1380          * @return string
1381          */
1382         public static function getAccountType(array $contact)
1383         {
1384                 // There are several fields that indicate that the contact or user is a forum
1385                 // "page-flags" is a field in the user table,
1386                 // "forum" and "prv" are used in the contact table. They stand for self::PAGE_COMMUNITY and self::PAGE_PRVGROUP.
1387                 // "community" is used in the gcontact table and is true if the contact is self::PAGE_COMMUNITY or self::PAGE_PRVGROUP.
1388                 if ((isset($contact['page-flags']) && (intval($contact['page-flags']) == self::PAGE_COMMUNITY))
1389                         || (isset($contact['page-flags']) && (intval($contact['page-flags']) == self::PAGE_PRVGROUP))
1390                         || (isset($contact['forum']) && intval($contact['forum']))
1391                         || (isset($contact['prv']) && intval($contact['prv']))
1392                         || (isset($contact['community']) && intval($contact['community']))
1393                 ) {
1394                         $type = self::ACCOUNT_TYPE_COMMUNITY;
1395                 } else {
1396                         $type = self::ACCOUNT_TYPE_PERSON;
1397                 }
1398
1399                 // The "contact-type" (contact table) and "account-type" (user table) are more general then the chaos from above.
1400                 if (isset($contact["contact-type"])) {
1401                         $type = $contact["contact-type"];
1402                 }
1403
1404                 if (isset($contact["account-type"])) {
1405                         $type = $contact["account-type"];
1406                 }
1407
1408                 switch ($type) {
1409                         case self::ACCOUNT_TYPE_ORGANISATION:
1410                                 $account_type = L10n::t("Organisation");
1411                                 break;
1412
1413                         case self::ACCOUNT_TYPE_NEWS:
1414                                 $account_type = L10n::t('News');
1415                                 break;
1416
1417                         case self::ACCOUNT_TYPE_COMMUNITY:
1418                                 $account_type = L10n::t("Forum");
1419                                 break;
1420
1421                         default:
1422                                 $account_type = "";
1423                                 break;
1424                 }
1425
1426                 return $account_type;
1427         }
1428
1429         /**
1430          * @brief Blocks a contact
1431          *
1432          * @param int $uid
1433          * @return bool
1434          */
1435         public static function block($uid)
1436         {
1437                 $return = DBA::update('contact', ['blocked' => true], ['id' => $uid]);
1438
1439                 return $return;
1440         }
1441
1442         /**
1443          * @brief Unblocks a contact
1444          *
1445          * @param int $uid
1446          * @return bool
1447          */
1448         public static function unblock($uid)
1449         {
1450                 $return = DBA::update('contact', ['blocked' => false], ['id' => $uid]);
1451
1452                 return $return;
1453         }
1454
1455         /**
1456          * @brief Updates the avatar links in a contact only if needed
1457          *
1458          * @param string $avatar Link to avatar picture
1459          * @param int    $uid    User id of contact owner
1460          * @param int    $cid    Contact id
1461          * @param bool   $force  force picture update
1462          *
1463          * @return array Returns array of the different avatar sizes
1464          */
1465         public static function updateAvatar($avatar, $uid, $cid, $force = false)
1466         {
1467                 $contact = DBA::selectFirst('contact', ['avatar', 'photo', 'thumb', 'micro', 'nurl'], ['id' => $cid]);
1468                 if (!DBA::isResult($contact)) {
1469                         return false;
1470                 } else {
1471                         $data = [$contact["photo"], $contact["thumb"], $contact["micro"]];
1472                 }
1473
1474                 if (($contact["avatar"] != $avatar) || $force) {
1475                         $photos = Photo::importProfilePhoto($avatar, $uid, $cid, true);
1476
1477                         if ($photos) {
1478                                 DBA::update(
1479                                         'contact',
1480                                         ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()],
1481                                         ['id' => $cid]
1482                                 );
1483
1484                                 // Update the public contact (contact id = 0)
1485                                 if ($uid != 0) {
1486                                         $pcontact = DBA::selectFirst('contact', ['id'], ['nurl' => $contact['nurl'], 'uid' => 0]);
1487                                         if (DBA::isResult($pcontact)) {
1488                                                 self::updateAvatar($avatar, 0, $pcontact['id'], $force);
1489                                         }
1490                                 }
1491
1492                                 return $photos;
1493                         }
1494                 }
1495
1496                 return $data;
1497         }
1498
1499         /**
1500          * @param integer $id      contact id
1501          * @param string  $network Optional network we are probing for
1502          * @return boolean
1503          */
1504         public static function updateFromProbe($id, $network = '')
1505         {
1506                 /*
1507                   Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
1508                   This will reliably kill your communication with Friendica contacts.
1509                  */
1510
1511                 $fields = ['url', 'nurl', 'addr', 'alias', 'batch', 'notify', 'poll', 'poco', 'network'];
1512                 $contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
1513                 if (!DBA::isResult($contact)) {
1514                         return false;
1515                 }
1516
1517                 $ret = Probe::uri($contact["url"], $network);
1518
1519                 // If Probe::uri fails the network code will be different
1520                 if (($ret["network"] != $contact["network"]) && ($ret["network"] != $network)) {
1521                         return false;
1522                 }
1523
1524                 $update = false;
1525
1526                 // make sure to not overwrite existing values with blank entries
1527                 foreach ($ret as $key => $val) {
1528                         if (isset($contact[$key]) && ($contact[$key] != "") && ($val == "")) {
1529                                 $ret[$key] = $contact[$key];
1530                         }
1531
1532                         if (isset($contact[$key]) && ($ret[$key] != $contact[$key])) {
1533                                 $update = true;
1534                         }
1535                 }
1536
1537                 if (!$update) {
1538                         return true;
1539                 }
1540
1541                 DBA::update(
1542                         'contact', [
1543                                 'url'     => $ret['url'],
1544                                 'nurl'    => normalise_link($ret['url']),
1545                                 'network' => $ret['network'],
1546                                 'addr'    => $ret['addr'],
1547                                 'alias'   => $ret['alias'],
1548                                 'batch'   => $ret['batch'],
1549                                 'notify'  => $ret['notify'],
1550                                 'poll'    => $ret['poll'],
1551                                 'poco'    => $ret['poco']
1552                         ],
1553                         ['id' => $id]
1554                 );
1555
1556                 // Update the corresponding gcontact entry
1557                 PortableContact::lastUpdated($ret["url"]);
1558
1559                 return true;
1560         }
1561
1562         /**
1563          * Takes a $uid and a url/handle and adds a new contact
1564          * Currently if the contact is DFRN, interactive needs to be true, to redirect to the
1565          * dfrn_request page.
1566          *
1567          * Otherwise this can be used to bulk add StatusNet contacts, Twitter contacts, etc.
1568          *
1569          * Returns an array
1570          * $return['success'] boolean true if successful
1571          * $return['message'] error text if success is false.
1572          *
1573          * @brief Takes a $uid and a url/handle and adds a new contact
1574          * @param int    $uid
1575          * @param string $url
1576          * @param bool   $interactive
1577          * @param string $network
1578          * @return boolean|string
1579          */
1580         public static function createFromProbe($uid, $url, $interactive = false, $network = '')
1581         {
1582                 $result = ['cid' => -1, 'success' => false, 'message' => ''];
1583
1584                 $a = get_app();
1585
1586                 // remove ajax junk, e.g. Twitter
1587                 $url = str_replace('/#!/', '/', $url);
1588
1589                 if (!Network::isUrlAllowed($url)) {
1590                         $result['message'] = L10n::t('Disallowed profile URL.');
1591                         return $result;
1592                 }
1593
1594                 if (Network::isUrlBlocked($url)) {
1595                         $result['message'] = L10n::t('Blocked domain');
1596                         return $result;
1597                 }
1598
1599                 if (!$url) {
1600                         $result['message'] = L10n::t('Connect URL missing.');
1601                         return $result;
1602                 }
1603
1604                 $arr = ['url' => $url, 'contact' => []];
1605
1606                 Addon::callHooks('follow', $arr);
1607
1608                 if (empty($arr)) {
1609                         $result['message'] = L10n::t('The contact could not be added. Please check the relevant network credentials in your Settings -> Social Networks page.');
1610                         return $result;
1611                 }
1612
1613                 if (x($arr['contact'], 'name')) {
1614                         $ret = $arr['contact'];
1615                 } else {
1616                         $ret = Probe::uri($url, $network, $uid, false);
1617                 }
1618
1619                 if (($network != '') && ($ret['network'] != $network)) {
1620                         logger('Expected network ' . $network . ' does not match actual network ' . $ret['network']);
1621                         return $result;
1622                 }
1623
1624                 // check if we already have a contact
1625                 // the poll url is more reliable than the profile url, as we may have
1626                 // indirect links or webfinger links
1627
1628                 $condition = ['uid' => $uid, 'poll' => [$ret['poll'], normalise_link($ret['poll'])], 'network' => $ret['network'], 'pending' => false];
1629                 $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
1630                 if (!DBA::isResult($contact)) {
1631                         $condition = ['uid' => $uid, 'nurl' => normalise_link($url), 'network' => $ret['network'], 'pending' => false];
1632                         $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
1633                 }
1634
1635                 if (($ret['network'] === Protocol::DFRN) && !DBA::isResult($contact)) {
1636                         if ($interactive) {
1637                                 if (strlen($a->urlpath)) {
1638                                         $myaddr = bin2hex(System::baseUrl() . '/profile/' . $a->user['nickname']);
1639                                 } else {
1640                                         $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
1641                                 }
1642
1643                                 goaway($ret['request'] . "&addr=$myaddr");
1644
1645                                 // NOTREACHED
1646                         }
1647                 } elseif (Config::get('system', 'dfrn_only') && ($ret['network'] != Protocol::DFRN)) {
1648                         $result['message'] = L10n::t('This site is not configured to allow communications with other networks.') . EOL;
1649                         $result['message'] != L10n::t('No compatible communication protocols or feeds were discovered.') . EOL;
1650                         return $result;
1651                 }
1652
1653                 // This extra param just confuses things, remove it
1654                 if ($ret['network'] === Protocol::DIASPORA) {
1655                         $ret['url'] = str_replace('?absolute=true', '', $ret['url']);
1656                 }
1657
1658                 // do we have enough information?
1659
1660                 if (!((x($ret, 'name')) && (x($ret, 'poll')) && ((x($ret, 'url')) || (x($ret, 'addr'))))) {
1661                         $result['message'] .= L10n::t('The profile address specified does not provide adequate information.') . EOL;
1662                         if (!x($ret, 'poll')) {
1663                                 $result['message'] .= L10n::t('No compatible communication protocols or feeds were discovered.') . EOL;
1664                         }
1665                         if (!x($ret, 'name')) {
1666                                 $result['message'] .= L10n::t('An author or name was not found.') . EOL;
1667                         }
1668                         if (!x($ret, 'url')) {
1669                                 $result['message'] .= L10n::t('No browser URL could be matched to this address.') . EOL;
1670                         }
1671                         if (strpos($url, '@') !== false) {
1672                                 $result['message'] .= L10n::t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
1673                                 $result['message'] .= L10n::t('Use mailto: in front of address to force email check.') . EOL;
1674                         }
1675                         return $result;
1676                 }
1677
1678                 if ($ret['network'] === Protocol::OSTATUS && Config::get('system', 'ostatus_disabled')) {
1679                         $result['message'] .= L10n::t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
1680                         $ret['notify'] = '';
1681                 }
1682
1683                 if (!$ret['notify']) {
1684                         $result['message'] .= L10n::t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
1685                 }
1686
1687                 $writeable = ((($ret['network'] === Protocol::OSTATUS) && ($ret['notify'])) ? 1 : 0);
1688
1689                 $subhub = (($ret['network'] === Protocol::OSTATUS) ? true : false);
1690
1691                 $hidden = (($ret['network'] === Protocol::MAIL) ? 1 : 0);
1692
1693                 if (in_array($ret['network'], [Protocol::MAIL, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
1694                         $writeable = 1;
1695                 }
1696
1697                 if (DBA::isResult($contact)) {
1698                         // update contact
1699                         $new_relation = (($contact['rel'] == self::FOLLOWER) ? self::FRIEND : self::SHARING);
1700
1701                         $fields = ['rel' => $new_relation, 'subhub' => $subhub, 'readonly' => false];
1702                         DBA::update('contact', $fields, ['id' => $contact['id']]);
1703                 } else {
1704                         $new_relation = (in_array($ret['network'], [Protocol::MAIL]) ? self::FRIEND : self::SHARING);
1705
1706                         // create contact record
1707                         DBA::insert('contact', [
1708                                 'uid'     => $uid,
1709                                 'created' => DateTimeFormat::utcNow(),
1710                                 'url'     => $ret['url'],
1711                                 'nurl'    => normalise_link($ret['url']),
1712                                 'addr'    => $ret['addr'],
1713                                 'alias'   => $ret['alias'],
1714                                 'batch'   => $ret['batch'],
1715                                 'notify'  => $ret['notify'],
1716                                 'poll'    => $ret['poll'],
1717                                 'poco'    => $ret['poco'],
1718                                 'name'    => $ret['name'],
1719                                 'nick'    => $ret['nick'],
1720                                 'network' => $ret['network'],
1721                                 'pubkey'  => $ret['pubkey'],
1722                                 'rel'     => $new_relation,
1723                                 'priority'=> $ret['priority'],
1724                                 'writable'=> $writeable,
1725                                 'hidden'  => $hidden,
1726                                 'blocked' => 0,
1727                                 'readonly'=> 0,
1728                                 'pending' => 0,
1729                                 'subhub'  => $subhub
1730                         ]);
1731                 }
1732
1733                 $contact = DBA::selectFirst('contact', [], ['url' => $ret['url'], 'network' => $ret['network'], 'uid' => $uid]);
1734                 if (!DBA::isResult($contact)) {
1735                         $result['message'] .= L10n::t('Unable to retrieve contact information.') . EOL;
1736                         return $result;
1737                 }
1738
1739                 $contact_id = $contact['id'];
1740                 $result['cid'] = $contact_id;
1741
1742                 Group::addMember(User::getDefaultGroup($uid, $contact["network"]), $contact_id);
1743
1744                 // Update the avatar
1745                 self::updateAvatar($ret['photo'], $uid, $contact_id);
1746
1747                 // pull feed and consume it, which should subscribe to the hub.
1748
1749                 Worker::add(PRIORITY_HIGH, "OnePoll", $contact_id, "force");
1750
1751                 $owner = User::getOwnerDataById($uid);
1752
1753                 if (DBA::isResult($owner)) {
1754                         if (in_array($contact['network'], [Protocol::OSTATUS, Protocol::DFRN])) {
1755                                 // create a follow slap
1756                                 $item = [];
1757                                 $item['verb'] = ACTIVITY_FOLLOW;
1758                                 $item['follow'] = $contact["url"];
1759                                 $item['body'] = '';
1760                                 $item['title'] = '';
1761                                 $item['guid'] = '';
1762                                 $item['tag'] = '';
1763                                 $item['attach'] = '';
1764
1765                                 $slap = OStatus::salmon($item, $owner);
1766
1767                                 if (!empty($contact['notify'])) {
1768                                         Salmon::slapper($owner, $contact['notify'], $slap);
1769                                 }
1770                         } elseif ($contact['network'] == Protocol::DIASPORA) {
1771                                 $ret = Diaspora::sendShare($a->user, $contact);
1772                                 logger('share returns: ' . $ret);
1773                         } elseif ($contact['network'] == Protocol::ACTIVITYPUB) {
1774                                 $ret = ActivityPub::transmitActivity('Follow', $contact['url'], $uid);
1775                                 logger('Follow returns: ' . $ret);
1776                         }
1777                 }
1778
1779                 $result['success'] = true;
1780                 return $result;
1781         }
1782
1783         /**
1784          * @brief Updated contact's SSL policy
1785          *
1786          * @param array  $contact Contact array
1787          * @param string $new_policy New policy, valid: self,full
1788          *
1789          * @return array Contact array with updated values
1790          */
1791         public static function updateSslPolicy(array $contact, $new_policy)
1792         {
1793                 $ssl_changed = false;
1794                 if ((intval($new_policy) == SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'], 'https:')) {
1795                         $ssl_changed = true;
1796                         $contact['url']     =   str_replace('https:', 'http:', $contact['url']);
1797                         $contact['request'] =   str_replace('https:', 'http:', $contact['request']);
1798                         $contact['notify']  =   str_replace('https:', 'http:', $contact['notify']);
1799                         $contact['poll']    =   str_replace('https:', 'http:', $contact['poll']);
1800                         $contact['confirm'] =   str_replace('https:', 'http:', $contact['confirm']);
1801                         $contact['poco']    =   str_replace('https:', 'http:', $contact['poco']);
1802                 }
1803
1804                 if ((intval($new_policy) == SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'], 'http:')) {
1805                         $ssl_changed = true;
1806                         $contact['url']     =   str_replace('http:', 'https:', $contact['url']);
1807                         $contact['request'] =   str_replace('http:', 'https:', $contact['request']);
1808                         $contact['notify']  =   str_replace('http:', 'https:', $contact['notify']);
1809                         $contact['poll']    =   str_replace('http:', 'https:', $contact['poll']);
1810                         $contact['confirm'] =   str_replace('http:', 'https:', $contact['confirm']);
1811                         $contact['poco']    =   str_replace('http:', 'https:', $contact['poco']);
1812                 }
1813
1814                 if ($ssl_changed) {
1815                         $fields = ['url' => $contact['url'], 'request' => $contact['request'],
1816                                         'notify' => $contact['notify'], 'poll' => $contact['poll'],
1817                                         'confirm' => $contact['confirm'], 'poco' => $contact['poco']];
1818                         DBA::update('contact', $fields, ['id' => $contact['id']]);
1819                 }
1820
1821                 return $contact;
1822         }
1823
1824         public static function addRelationship($importer, $contact, $datarray, $item = '', $sharing = false) {
1825                 // Should always be set
1826                 if (empty($datarray['author-id'])) {
1827                         return;
1828                 }
1829
1830                 $fields = ['url', 'name', 'nick', 'photo', 'network'];
1831                 $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
1832                 if (!DBA::isResult($pub_contact)) {
1833                         // Should never happen
1834                         return;
1835                 }
1836
1837                 $url = $pub_contact['url'];
1838                 $name = $pub_contact['name'];
1839                 $photo = $pub_contact['photo'];
1840                 $nick = $pub_contact['nick'];
1841                 $network = $pub_contact['network'];
1842
1843                 if (is_array($contact)) {
1844                         if (($contact['rel'] == self::SHARING)
1845                                 || ($sharing && $contact['rel'] == self::FOLLOWER)) {
1846                                 DBA::update('contact', ['rel' => self::FRIEND, 'writable' => true],
1847                                                 ['id' => $contact['id'], 'uid' => $importer['uid']]);
1848                         }
1849
1850                         if ($contact['network'] == Protocol::ACTIVITYPUB) {
1851                                 ActivityPub::transmitContactActivity('Accept', $contact['url'], $contact['hub-verify'], $importer['uid']);
1852                         }
1853
1854                         // send email notification to owner?
1855                 } else {
1856                         if (DBA::exists('contact', ['nurl' => normalise_link($url), 'uid' => $importer['uid'], 'pending' => true])) {
1857                                 logger('ignoring duplicated connection request from pending contact ' . $url);
1858                                 return;
1859                         }
1860                         // create contact record
1861                         q("INSERT INTO `contact` (`uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
1862                                 `blocked`, `readonly`, `pending`, `writable`)
1863                                 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1)",
1864                                 intval($importer['uid']),
1865                                 DBA::escape(DateTimeFormat::utcNow()),
1866                                 DBA::escape($url),
1867                                 DBA::escape(normalise_link($url)),
1868                                 DBA::escape($name),
1869                                 DBA::escape($nick),
1870                                 DBA::escape($photo),
1871                                 DBA::escape($network),
1872                                 intval(self::FOLLOWER)
1873                         );
1874
1875                         $contact_record = [
1876                                 'id' => DBA::lastInsertId(),
1877                                 'network' => $network,
1878                                 'name' => $name,
1879                                 'url' => $url,
1880                                 'photo' => $photo
1881                         ];
1882
1883                         Contact::updateAvatar($photo, $importer["uid"], $contact_record["id"], true);
1884
1885                         /// @TODO Encapsulate this into a function/method
1886                         $fields = ['uid', 'username', 'email', 'page-flags', 'notify-flags', 'language'];
1887                         $user = DBA::selectFirst('user', $fields, ['uid' => $importer['uid']]);
1888                         if (DBA::isResult($user) && !in_array($user['page-flags'], [self::PAGE_SOAPBOX, self::PAGE_FREELOVE, self::PAGE_COMMUNITY])) {
1889                                 // create notification
1890                                 $hash = random_string();
1891
1892                                 if (is_array($contact_record)) {
1893                                         DBA::insert('intro', ['uid' => $importer['uid'], 'contact-id' => $contact_record['id'],
1894                                                                 'blocked' => false, 'knowyou' => false,
1895                                                                 'hash' => $hash, 'datetime' => DateTimeFormat::utcNow()]);
1896                                 }
1897
1898                                 Group::addMember(User::getDefaultGroup($importer['uid'], $contact_record["network"]), $contact_record['id']);
1899
1900                                 if (($user['notify-flags'] & NOTIFY_INTRO) &&
1901                                         in_array($user['page-flags'], [self::PAGE_NORMAL])) {
1902
1903                                         notification([
1904                                                 'type'         => NOTIFY_INTRO,
1905                                                 'notify_flags' => $user['notify-flags'],
1906                                                 'language'     => $user['language'],
1907                                                 'to_name'      => $user['username'],
1908                                                 'to_email'     => $user['email'],
1909                                                 'uid'          => $user['uid'],
1910                                                 'link'         => System::baseUrl() . '/notifications/intro',
1911                                                 'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : L10n::t('[Name Withheld]')),
1912                                                 'source_link'  => $contact_record['url'],
1913                                                 'source_photo' => $contact_record['photo'],
1914                                                 'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
1915                                                 'otype'        => 'intro'
1916                                         ]);
1917
1918                                 }
1919                         } elseif (DBA::isResult($user) && in_array($user['page-flags'], [self::PAGE_SOAPBOX, self::PAGE_FREELOVE, self::PAGE_COMMUNITY])) {
1920                                 $condition = ['uid' => $importer['uid'], 'url' => $url, 'pending' => true];
1921                                 DBA::update('contact', ['pending' => false], $condition);
1922                         }
1923                 }
1924         }
1925
1926         public static function removeFollower($importer, $contact, array $datarray = [], $item = "")
1927         {
1928                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::SHARING)) {
1929                         DBA::update('contact', ['rel' => self::SHARING], ['id' => $contact['id']]);
1930                 } else {
1931                         Contact::remove($contact['id']);
1932                 }
1933         }
1934
1935         public static function removeSharer($importer, $contact, array $datarray = [], $item = "")
1936         {
1937                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::FOLLOWER)) {
1938                         DBA::update('contact', ['rel' => self::FOLLOWER], ['id' => $contact['id']]);
1939                 } else {
1940                         Contact::remove($contact['id']);
1941                 }
1942         }
1943
1944         /**
1945          * @brief Create a birthday event.
1946          *
1947          * Update the year and the birthday.
1948          */
1949         public static function updateBirthdays()
1950         {
1951                 // This only handles foreign or alien networks where a birthday has been provided.
1952                 // In-network birthdays are handled within local_delivery
1953
1954                 $r = q("SELECT * FROM `contact` WHERE `bd` != '' AND `bd` > '0001-01-01' AND SUBSTRING(`bd`, 1, 4) != `bdyear` ");
1955                 if (DBA::isResult($r)) {
1956                         foreach ($r as $rr) {
1957                                 logger('update_contact_birthday: ' . $rr['bd']);
1958
1959                                 $nextbd = DateTimeFormat::utcNow('Y') . substr($rr['bd'], 4);
1960
1961                                 /*
1962                                  * Add new birthday event for this person
1963                                  *
1964                                  * $bdtext is just a readable placeholder in case the event is shared
1965                                  * with others. We will replace it during presentation to our $importer
1966                                  * to contain a sparkle link and perhaps a photo.
1967                                  */
1968
1969                                 // Check for duplicates
1970                                 $condition = ['uid' => $rr['uid'], 'cid' => $rr['id'],
1971                                         'start' => DateTimeFormat::utc($nextbd), 'type' => 'birthday'];
1972                                 if (DBA::exists('event', $condition)) {
1973                                         continue;
1974                                 }
1975
1976                                 $bdtext = L10n::t('%s\'s birthday', $rr['name']);
1977                                 $bdtext2 = L10n::t('Happy Birthday %s', ' [url=' . $rr['url'] . ']' . $rr['name'] . '[/url]');
1978
1979                                 q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`,`adjust`)
1980                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%d' ) ", intval($rr['uid']), intval($rr['id']),
1981                                         DBA::escape(DateTimeFormat::utcNow()), DBA::escape(DateTimeFormat::utcNow()), DBA::escape(DateTimeFormat::utc($nextbd)),
1982                                         DBA::escape(DateTimeFormat::utc($nextbd . ' + 1 day ')), DBA::escape($bdtext), DBA::escape($bdtext2), DBA::escape('birthday'),
1983                                         intval(0)
1984                                 );
1985
1986                                 // update bdyear
1987                                 q("UPDATE `contact` SET `bdyear` = '%s', `bd` = '%s' WHERE `uid` = %d AND `id` = %d", DBA::escape(substr($nextbd, 0, 4)),
1988                                         DBA::escape($nextbd), intval($rr['uid']), intval($rr['id'])
1989                                 );
1990                         }
1991                 }
1992         }
1993
1994         /**
1995          * Remove the unavailable contact ids from the provided list
1996          *
1997          * @param array $contact_ids Contact id list
1998          */
1999         public static function pruneUnavailable(array &$contact_ids)
2000         {
2001                 if (empty($contact_ids)) {
2002                         return;
2003                 }
2004
2005                 $str = DBA::escape(implode(',', $contact_ids));
2006
2007                 $stmt = DBA::p("SELECT `id` FROM `contact` WHERE `id` IN ( " . $str . ") AND `blocked` = 0 AND `pending` = 0 AND `archive` = 0");
2008
2009                 $return = [];
2010                 while($contact = DBA::fetch($stmt)) {
2011                         $return[] = $contact['id'];
2012                 }
2013
2014                 DBA::close($stmt);
2015
2016                 $contact_ids = $return;
2017         }
2018
2019         /**
2020          * @brief Returns a magic link to authenticate remote visitors
2021          *
2022          * @param string $contact_url The address of the target contact profile
2023          * @param integer $url An url that we will be redirected to after the authentication
2024          *
2025          * @return string with "redir" link
2026          */
2027         public static function magicLink($contact_url, $url = '')
2028         {
2029                 $cid = self::getIdForURL($contact_url, 0, true);
2030                 if (empty($cid)) {
2031                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2032                 }
2033
2034                 return self::magicLinkbyId($cid, $url);
2035         }
2036
2037         /**
2038          * @brief Returns a magic link to authenticate remote visitors
2039          *
2040          * @param integer $cid The contact id of the target contact profile
2041          * @param integer $url An url that we will be redirected to after the authentication
2042          *
2043          * @return string with "redir" link
2044          */
2045         public static function magicLinkbyId($cid, $url = '')
2046         {
2047                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], ['id' => $cid]);
2048
2049                 return self::magicLinkbyContact($contact, $url);
2050         }
2051
2052         /**
2053          * @brief Returns a magic link to authenticate remote visitors
2054          *
2055          * @param array $contact The contact array with "uid", "network" and "url"
2056          * @param integer $url An url that we will be redirected to after the authentication
2057          *
2058          * @return string with "redir" link
2059          */
2060         public static function magicLinkbyContact($contact, $url = '')
2061         {
2062                 if ($contact['network'] != Protocol::DFRN) {
2063                         return $url ?: $contact['url']; // Equivalent to ($url != '') ? $url : $contact['url'];
2064                 }
2065
2066                 // Only redirections to the same host do make sense
2067                 if (($url != '') && (parse_url($url, PHP_URL_HOST) != parse_url($contact['url'], PHP_URL_HOST))) {
2068                         return $url;
2069                 }
2070
2071                 if ($contact['uid'] != 0) {
2072                         return self::magicLink($contact['url'], $url);
2073                 }
2074
2075                 $redirect = 'redir/' . $contact['id'];
2076
2077                 if ($url != '') {
2078                         $redirect .= '?url=' . $url;
2079                 }
2080
2081                 return $redirect;
2082         }
2083 }